Jim Day, I'll have to admit, you have several good points. However, in this day and age of CNC machining capabilities the required adapters and coupling sleeve to adapt to the output shaft of the Tcase should be no problem. It sounds like there might be other reasons keeping them from mounting their unit behind the Tcase. Evidently Gearvendors has seen the merits of mounting the OD unit behind the Tcase. Then again if I remember right the Gearvendors unit is shorter, more compact and probably weighs less than the US Gear unit. I realize mounting the US Gear unit would require some engineering effort, but consider the sales possiblities and a whole new segment of the market it would open up for them. I have emailed US Gear to get the ball rollin'..... Lektrikman